Seho Start Selective Solder Machine

The StartSelective supports assemblies up to 508 × 508 mm (20″ × 20″).

The machine needs about 2.5 m² footprint. Operation is from the front; all set-up and maintenance can be done from the right side of the unit for easier access.

• It uses a precise micro drop-jet fluxer with automatic function control.
• Incorporates non-wetted mini-wave solder nozzles with a 7° soldering angle. These nozzles are almost maintenance-free with a long service life.

The machine includes bottom-side pulsar preheaters (activated in groups of two) and temperature-controlled top-side IR preheaters to ensure good heat distribution before soldering.

• All process steps are fully automated and monitored.
• Programming is done offline at any PC workstation, meaning the machine can remain in production while new programs are developed.

• Power: European standard 230/400 V, 3-phase + neutral + earth; US optional version 3×208 V, 60 Hz. Approximate power rating ~ 13 kW.
• Nitrogen: Minimum 4 bar pressure, recommended quality 5.0, consumption approx. 1.5-2.0 m³/h.
• Exhaust: One 150 mm stack, exhaust volume ~ 150 m³/h.

The StartSelective measures 2202 × 1350 × 1629 mm (length × width × height) and weighs 475 kg. Installation needs to accommodate space, support floor loading, exhaust ducting, and utility connections.

Benefits:

• Non-wetted mini-wave nozzles reduce maintenance and extend nozzle life, lowering operating costs.
• High precision, reproducibility, and good performance even with difficult geometries thanks to the 7° soldering angle and robust preheating.
• Fully automated process control and offline programming improves uptime and flexibility.

Trade-offs / Considerations:

• Manual loading/unloading of assemblies — requires operator intervention, which can be a bottleneck for high volume.
• Requires nitrogen supply of certain purity and pressure, and exhaust infrastructure.
• Upfront cost for feature set (mini-wave nozzles, pulsar preheaters, fluxer, etc.). Must ensure ROI via improved quality or reduced defects.
• For very large or heavy boards, the preheating zones and top-IR heating may require tuning to avoid thermal stress or warpage.

As an authorised SEHO partner, Hawker Richardson supplies the standalone SEHO Start Selective machine across Australia and New Zealand. We provide on-site installation, training, servicing and technical support, with coverage spanning Melbourne, Sydney, Adelaide, Auckland, and Christchurch, and stock commonly used spare parts for fast servicing and minimal downtime.